Our BLACK LABEL .38 Special cartridge features factory new Starline brass, and a 158 grain Hornady XTP bullet for maximum stopping power. "XTP" stands for "Extreme Terminal Performance". It is designed for maximum expansion, and is often used for hunting medium sized game such as deer. This particular XTP bullet features a cannelure, which helps the jacket and core stay together during expansion. When you're carrying, carry BLACK LABEL.